126774169 has 2 divisors, whose sum is σ = 126774170. Its totient is φ = 126774168.

The previous prime is 126774143. The next prime is 126774187. The reversal of 126774169 is 961477621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95804944 + 30969225 = 9788^2 + 5565^2 .

It is a cyclic number.

It is not a de Polignac number, because 126774169 - 2⁷ = 126774041 is a prime.

It is a super-2 number, since 2×126774169² = 32143379851281122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126774119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63387084 + 63387085.

It is an arithmetic number, because the mean of its divisors is an integer number (63387085).

Almost surely, 2^126774169 is an apocalyptic number.

It is an amenable number.

126774169 is a deficient number, since it is larger than the sum of its proper divisors (1).

126774169 is an equidigital number, since it uses as much as digits as its factorization.

126774169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 126774169 is about 11259.4035810073. The cubic root of 126774169 is about 502.3544543536.

The spelling of 126774169 in words is "one hundred twenty-six million, seven hundred seventy-four thousand, one hundred sixty-nine".